Electronic Components Datasheet Search |
|
TPS62140 Datasheet(PDF) 8 Page - Texas Instruments |
|
TPS62140 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 40 page control logic Soft start Thermal Shtdwn UVLO PG control power control error amplifier gate drive HS lim LS lim PVIN PVIN AVIN PG PGND PGND AGND comp comp + _ timer tON DCS - Control TM direct control & compensation comparator ramp SW SW SW EN * SS/TR DEF * FSW * VOS FB * * This pin is connected to a pull down resistor internally (see Detailed Description section). TPS62140, TPS62140A TPS62141, TPS62142, TPS62143 SLVSAJ0C – NOVEMBER 2011 – REVISED AUGUST 2015 www.ti.com Functional Block Diagrams (continued) Figure 6. TPS62141/2/3 (Fixed Output Voltage) 8.3 Feature Description 8.3.1 Enable / Shutdown (EN) When the enable pin (EN) is set High, the device starts operation. Shutdown is forced if EN is pulled Low with a shutdown current of typically 1.5 µA. During shutdown, the internal power MOSFETs as well as the entire control circuitry are turned off. The internal resistive divider pulls down the output voltage smoothly. An internal pulldown resistor of about 400 k Ω is connected and keeps EN logic Low if the pin is floating. It is disconnected if the pin is High. Connecting the EN pin to an appropriate output signal of another power rail provides sequencing of multiple power rails. 8.3.2 Soft-Start / Tracking (SS/TR) The internal soft-start circuitry controls the output voltage slope during start-up. This avoids excessive inrush current and ensures a controlled output-voltage rise time. It also prevents unwanted voltage drops from high- impedance power sources or batteries. When EN is set to start device operation, the device starts switching after a delay of about 50 µs, and VOUT rises with a slope controlled by an external capacitor connected to the SS/TR pin. See Figure 34 and Figure 35 for typical start-up operation. 8 Submit Documentation Feedback Copyright © 2011–2015, Texas Instruments Incorporated Product Folder Links: TPS62140 TPS62140A TPS62141 TPS62142 TPS62143 |
Similar Part No. - TPS62140_15 |
|
Similar Description - TPS62140_15 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |